2920.90.51.00/Silicic Acid Tetraethyl Ester (Tetraethoxysilane)/Mexico

Silicic Acid Tetraethyl Ester (Tetraethoxysilane) from Mexico

Tetraethyl orthosilicate (TEOS) is silicic acid tetraester used in sol-gel processing, chemical vapor deposition, and zeolite manufacturing. Classifies under HTS 2920.90.51.00 as ester of inorganic silicon acid. Semiconductor precursor.

Duty Rate — Mexico → United States

3.7%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Hydrolysis rate data needed for sol-gel application declarations

• Silicon content verification prevents misclassification as organosilicon polymer

Silicic Acid Tetraethyl Ester (Tetraethoxysilane) from Mexico — Import Duty Rate | HTS 2920.90.51.00